浙江省气象及环境因子对负氧离子浓度的影响  

Effects of meteorological and environmental factors on negative oxygen ions concentration in Zhejiang Province.

作　　者：郁珍艳[1] 李正泉[1] 樊高峰[1] 高大伟[1] 张含 YU Zhen-yan;LI Zheng-quan;FAN Gao-feng;GAO Da-wei;ZHANG Han(Zhejiang Climate Center,Hangzhou 310017,China)

机构地区：[1]浙江省气候中心,浙江杭州310017

出　　处：《中国环境科学》2023年第2期514-524,共11页China Environmental Science

基　　金：浙江省气象科技计划重点项目(2019ZD07);国家自然科学基金资助项目(42005027);中国气象局气象发展与规划院政策研究项目(ZCYJ20220010)。

摘　　要：基于2019年浙江省89个站的负氧离子浓度监测结果,结合气象及环境观测资料,开展了负氧离子浓度分布及气象和环境因子对负氧离子浓度的影响分析.结果表明:浙南和浙西的山区负氧离子浓度高,年平均浓度基本均在1000个/cm^(3)以上;浙北平原浓度相对较低,大部分站年平均浓度在500~1000个/cm^(3)左右.负氧离子浓度基本表现为高山林区>浅山景区>海岛、水体附近>郊区、平原公园>城镇.环境因素和气象因子对负氧离子浓度有一定的影响,负氧离子浓度与AQI、PM_(2.5)、PM_(10)、SO_(2)、NO_(2)、CO等环境因子呈现出明显的负相关性.随着日照时数的增加,负氧离子浓度基本呈现出明显增大的变化趋势.当日平均气温在2~15℃和23~31℃时,随着气温的上升,负氧离子浓度基本呈现增大的变化趋势.50%~75%为相对适宜的相对湿度,对应的负氧离子浓度也较高.降水量越大、风速越大,负氧离子浓度基本呈现出升高的变化趋势;但当雨量达到暴雨级别、风速达到强风级别以上时,负氧离子浓度开始有出现回落的变化趋势.Based on the negative oxygen ions concentration data of 89 observatories and meteorological and environmental observational data in Zhejiang province,the effects of meteorological and environmental factors on negative oxygen ions concentration was analyzed,as well as the distribution of negative oxygen ions concentration.Results showed that:in the mountain areas of South and West Zhejiang,negative oxygen ions concentration was relatively high,with annual mean value generally higher than 1000cm-3;whereas in plain areas of North Zhejiang,negative oxygen ions concentration was relatively low,with annual mean value mostly amount to 500~1000cm^(-3).Generally,the spatial distribution of negative oxygen ions concentration showed a pattern of high-mountain forest areas>middle-hill scenic areas>areas near island or water bodies>parks in suburban and plain areas>urban areas.Meteorological and environmental factors had certain effects on negative oxygen ions concentration,showed noticeable negative correlation between negative oxygen ions concentration and environmental factors of AQI,PM_(2.5),PM_(10),SO_(2),NO_(2),CO.With the increase of sunshine duration,negative oxygen ions concentration also tended to increase.When daily mean air temperature ranged from 2~15℃to 23~31℃,with the rose of air temperature,negative oxygen ions concentration tended to increase.When relative humidity was within the comfort range of 50%~75%,negative oxygen ions concentration was relatively high.With the increased of precipitation or wind speed,negative oxygen ions concentration generally increased.However,when precipitation was greater than torrential rain or wind speed was stronger than strong breeze,negative oxygen ions concentration tended to decrease with the increase of precipitation or wind speed.

关 键 词：负氧离子 生态环境 空气质量 气象条件 

分 类 号：X823[环境科学与工程—环境工程]